EP 0834904 B1 20000913 - High pressure mercury ultraviolet lamp
Title (en)
High pressure mercury ultraviolet lamp
Title (de)
Hochdruck Quecksilber-Ultravioletlampe
Title (fr)
Lampe ultraviolette au mercure à haute pression
Publication
Application
Priority
JP 28286496 A 19961007
Abstract (en)
[origin: EP0834904A2] A high pressure mercury ultraviolet lamp with high dimensional accuracy in which the emitter material during lamp operation is prevented from spraying and being deposited onto the wall of the discharge vessel and the UV radiation transmission factor is prevented from being reduced is achieved by the fact that at least one of a group of halides which consists of halides of yttrium lanthanum, cerium, dysprosium, gadolinium and thorium and at least one of a group of halides which consists of halides of alkali metal elements are filled at a filling ratio in the range from 1:4 to 1:20 to one another as a molar fraction. This also yields the same action as the application of emitter material to the upholding parts of the electrodes. Furthermore, high dimensional accuracy can be ensured by the measure by which the discharge vessel is made of a translucent ceramic, such as YAG. <IMAGE>
IPC 1-7
IPC 8 full level
H01J 61/20 (2006.01); H01J 61/30 (2006.01); H01J 61/82 (2006.01); H01J 61/88 (2006.01)
CPC (source: EP US)
H01J 61/20 (2013.01 - EP US); H01J 61/822 (2013.01 - EP US)
Designated contracting state (EPC)
DE NL
DOCDB simple family (publication)
EP 0834904 A2 19980408; EP 0834904 A3 19980603; EP 0834904 B1 20000913; DE 69703079 D1 20001019; DE 69703079 T2 20010322; JP 3269976 B2 20020402; JP H10112283 A 19980428; US 5905341 A 19990518
DOCDB simple family (application)
EP 97117311 A 19971007; DE 69703079 T 19971007; JP 28286496 A 19961007; US 94609697 A 19971007